I am trying to print something inside my html from a java script. I did this but it don't work:
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<p>I am trying to print <script>go();</script></p>
<script>
function go() {
document.write("Hello World!");
}
</script>
</body>
</html>
You're function hasn't been defined yet in the example you are posting, so call to go effectively does nothing, change the ordering of your script tag
<!DOCTYPE html>
<html>
<head>
<script>
function go() {
document.write("Hello World!");
}
</script>
</head>
<body>
<p>I am trying to print <script>go();</script></p>
</body>
</html>
Related
I'm trying to work on iFrame contents and the below snippet is not returning the value of h1 from the iFramed URL. Instead, it alerts undefined. Can someone please suggest what is wrong here?
<!doctype HTML>
<head>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
</head>
<body>
<button id="myBtn">Login</button>
<br><br>
<iframe name="SSOBlock" id="SSOBlock" src="https://www.example.com/" ></iframe>
<script>
$("#myBtn").click(function(e) {
e.preventDefault();
alert($('iframe[name=SSOBlock]').contents().find('h1').html());
});
</script>
</body>
</html>
Can someone help me? I wrote simple code in javascript and it wont work for some reason. I tried to figure out but i cant see why. I have downloaded jquery and it is all ok with it, also i tried only javascript code and still same problem. Browser is ok it load jquery and javascript on file i made earlier but doesnt load on this.Here is code:
<!DOCTYPE html>
<html>
<head>
<title>Proba</title>
<script src="jquery-3.3.1.js">
$('#btn').click(function f() {
console.log(1);
});
</script>
</head>
<body>
<button id="btn">Click</button>
</body>
</html>
<head>
<title>Proba</title>
</head>
<body>
<button id="btn">Click</button>
<script src="jquery-3.3.1.js"></script>
<script>
$(document).ready(function(){
$("#btn").click(function(
console.log(1);
))
})
</script>
</body>
Try like this :)
You are binding your event handler, before the browser was able to parse your HTML. So #btn element is not in the DOM yet at this point.
Either wrap you code inside document.ready or move the script to the bottom of the body tag.
1st Approach
<head>
<title>Proba</title>
<script src="jquery-3.3.1.js"></script>
<script>
$(function() {
$('#btn').click(function f() {
console.log(1);
});
});
</script>
</head>
<body>
<button id="btn">Click</button>
</body>
2nd Approach
<head>
<title>Proba</title>
<script src="jquery-3.3.1.js"></script>
</head>
<body>
<button id="btn">Click</button>
<script>
$('#btn').click(function f() {
console.log(1);
});
</script>
</body>
Have you verified "jquery-3.3.1.js" really exists in the current directory? Try instead loading the script through a known host, like Google:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
EDITED: Added working code. Note button checking must be done when document has finally loaded.
<!DOCTYPE html>
<html>
<head>
<title>Proba</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("#btn").click(function() {
console.log(2);
});
})
</script>
</head>
<body>
<button id="btn">Click</button>
</body>
</html>
I already fail at a seemingly basic task in javascript - changing a div's content by a script. Please help me understand where I am going wrong. Here is a minimal example that's not working for me:
<!DOCTYPE html>
<html>
<head>
<script>
document.getElementById('id').innerHTML = "test";
</script>
</head>
<body>
<div id="id" >blub</div>
</body>
</html>
The Problem with you code it that the JavaScript code is executed before the div part is loaded fully. To fix this change you code to:
<!DOCTYPE html>
<html>
<head>
<script>
function changeDiv()
{
document.getElementById('id').innerHTML = "test";
}
</script>
</head>
<body onload="changeDiv();">
<div id="id" >blub</div>
</body>
</html>
The onload event will only fire when the html is fully loaded.
HTML files load starting at the top to the bottom of the html.
In your example, the javascript executes before the <body> tag exists in the DOM.
Moving the javascript to below the relevant html makes it work as you would expect.
Another option would be to keep the script inside the <head> but delay it from executing until the DOM is loaded
window.onload = function() {
document.getElementById('id').innerHTML = "test";
};
https://developer.mozilla.org/en/docs/Web/API/GlobalEventHandlers/onload
<!DOCTYPE html>
<html>
<head></head>
<body>
<div id="id" >blub</div>
<script>
document.getElementById('id').innerHTML = "test";
</script>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<div id="id" >blub</div>
<script>
document.getElementById('id').innerHTML = "test";
</script>
</body>
</html>
put your script after the div.
You need to use window.onload to call your code when html is fully loaded:
<!DOCTYPE html>
<html>
<head>
<script>
window.onload = function() {
document.getElementById('id').innerHTML = "test";
};
</script>
</head>
<body>
<div id="id" >blub</div>
</body>
</html>
Your Dom is no not loaded.. Place your script tag at the end before
Just add the script tag before closing the body. It'll work.
You have to write the Javascript after the div-Tag. First the DOM needs to be loaded and after you can change the content inside the DIV.
Place your Javascript before the closing-body Tag
I'm tring to use the command innerHTML to change the text of my HTML code. it works if I put it at the HTML file, but not if I put in an external one.
The one that works:
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<p id="Monkey">Monkey</p>
<script>
document.querySelector("#Monkey").innerHTML="NoMoreMonkeys";
</script>
</body>
</html
Output: NoMoreMonkeys
The one that doesn't:
<!DOCTYPE html>
<html>
<head>
<script src="hello.js"></script>
</head>
<body>
<p id="Monkey">Monkey</p>
</body>
</html>
File "hello.js" :
document.querySelector("#Monkey").innerHTML="NoMoreMonkeys";
Output: Monkey
Can someone help me?
You should include js before end of body,
because if js run before DOM ready, #Monkey did not exist.
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<p id="Monkey">Monkey</p>
<script src="hello.js"></script>
</body>
</html>
Or use jquery document ready:
$(document).ready(function() {
document.querySelector("#Monkey").innerHTML="NoMoreMonkeys";
});
The solution is to manipulate the page, when it is safe to do.
For that add jQuery to your page and let your JS code execute, when thh document is ready.
$( document ).ready(function() {
document.querySelector("#Monkey").innerHTML="NoMoreMonkeys";
});
or select element with jQuery as well:
$( document ).ready(function() {
$( "#Monkey" ).html("NoMoreMonkeys");
});
Just made a basic program to fin the root of my problem and I can't seem to find why this is not working at all.
HTML
<html lang="en">
<head>
<script type="text/javascript" src="carjava.js"></script>
</head>
<body onload="hi()">
hi
</body>
</html>
JS
function hi() {
alert("hi");
}
I want an alert to pop up when the page loads but nothing happens, any ideas?
I can't tell you why it isn't firing, but this should work:
HTML
<html lang="en">
<head>
<script type="text/javascript" src="carjava.js"></script>
</head>
<body>
hi
</body>
</html>
JS
function hi() {
alert("hi");
}
window.onload = hi;
following code is working fine for me:
<html lang="en">
<head>
<script type="text/javascript" src="carjava.js"></script>
<script type="text/javascript">
function hi()
{
alert('hi');
}
</script>
</head>
<body onload="hi()">
hi
</body>
</html>
Its working fine in Firefox & Chrome. Must be something with js file.